Add a function to turn a css style into pango attributes

This is _gtk_style_context_get_pango_attributes, decoupled
from the GtkStyleContext. This will be used to drive css-styled
text rendering from css subnodes of widgets, e.g. for the value
in GtkScale.

1 files changed, 1 insertions, 70 deletions

diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index f5da8cab76..a6191bd0d1 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -3034,79 +3034,10 @@ _gtk_style_context_get_icon_extents (GtkStyleContext *context,
                                          x, y, width, height);
 }
 
-static PangoUnderline
-get_pango_underline_from_style (GtkTextDecorationStyle style)
-{
-  switch (style)
-    {
-    case GTK_CSS_TEXT_DECORATION_STYLE_DOUBLE:
-      return PANGO_UNDERLINE_DOUBLE;
-    case GTK_CSS_TEXT_DECORATION_STYLE_WAVY:
-      return PANGO_UNDERLINE_ERROR;
-    case GTK_CSS_TEXT_DECORATION_STYLE_SOLID:
-    default:
-      return PANGO_UNDERLINE_SINGLE;
-    }
-
-  g_return_val_if_reached (PANGO_UNDERLINE_SINGLE);
-}
-
-static PangoAttrList *
-add_pango_attr(PangoAttrList *attrs, PangoAttribute *attr)
-{
-  if (attrs == NULL)
-    attrs = pango_attr_list_new ();
-
-  pango_attr_list_insert (attrs, attr);
-
-  return attrs;
-}
-
 PangoAttrList *
 _gtk_style_context_get_pango_attributes (GtkStyleContext *context)
 {
-  PangoAttrList *attrs = NULL;
-  GtkTextDecorationLine decoration_line;
-  GtkTextDecorationStyle decoration_style;
-  const GdkRGBA *color;
-  const GdkRGBA *decoration_color;
-  gint letter_spacing;
-
-  /* text-decoration */
-  decoration_line = _gtk_css_text_decoration_line_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_DECORATION_LINE));
-  decoration_style = _gtk_css_text_decoration_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_DECORATION_STYLE));
-  color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
-  decoration_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_DECORATION_COLOR));
-
-  switch (decoration_line)
-    {
-    case GTK_CSS_TEXT_DECORATION_LINE_UNDERLINE:
-      attrs = add_pango_attr (attrs, pango_attr_underline_new (get_pango_underline_from_style (decoration_style)));
-      if (!gdk_rgba_equal (color, decoration_color))
-        attrs = add_pango_attr (attrs, pango_attr_underline_color_new (decoration_color->red * 65535. + 0.5,
-                                                                       decoration_color->green * 65535. + 0.5,
-                                                                       decoration_color->blue * 65535. + 0.5));
-      break;
-    case GTK_CSS_TEXT_DECORATION_LINE_LINE_THROUGH:
-      attrs = add_pango_attr (attrs, pango_attr_strikethrough_new (TRUE));
-      if (!gdk_rgba_equal (color, decoration_color))
-        attrs = add_pango_attr (attrs, pango_attr_strikethrough_color_new (decoration_color->red * 65535. + 0.5,
-                                                                           decoration_color->green * 65535. + 0.5,
-                                                                           decoration_color->blue * 65535. + 0.5));
-      break;
-    case GTK_CSS_TEXT_DECORATION_LINE_NONE:
-    default:
-      break;
-    }
-
-  /* letter-spacing */
-  letter_spacing = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_LETTER_SPACING), 100);
-  if (letter_spacing != 0)
-    {
-      attrs = add_pango_attr (attrs, pango_attr_letter_spacing_new (letter_spacing * PANGO_SCALE));
-    }
-
-    return attrs;
+  return gtk_css_style_get_pango_attributes (gtk_style_context_lookup_style (context));
 }
 
 static AtkAttributeSet *